From secure@CONECTIVA.COM.BR Wed Mar 28 18:19:30 2001
From: secure@CONECTIVA.COM.BR
To: BUGTRAQ@SECURITYFOCUS.COM
Date: Wed, 28 Mar 2001 12:40:10 -0300
Subject: [BUGTRAQ] [CLA-2001:391] Conectiva Linux Security Announcement - openssh
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CONECTIVA LINUX SECURITY ANNOUNCEMENT
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PACKAGE : openssh
SUMMARY : Passive traffic analysis
DATE : 2001-03-28 12:39:00
ID : CLA-2001:391
RELEVANT
RELEASES : 5.0, prg graficos, ecommerce, 5.1, 6.0
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DESCRIPTION
Solar Designer demonstrated[1] that it is possible to do a passive
analysis on an ssh encrypted connection and obtain important
information about that connection. In particular, it is possible to
obtain the number of characters of a password (which can be the login
password itself or even passwords entered during interactive commands
such as "su"), type of authentication that was used (password or
publickey) and the numbers of characters typed in a shell.
This analysis can, for example, give valuable information that will
reduce the universe of passwords that have to be tried in a
brute-force attack.
SOLUTION
It is recommended that all openssh users upgrade their packages.
DIRECT DOWNLOAD LINKS TO THE UPDATED PACKAGES
ftp://atualizacoes.conectiva.com.br/5.0/SRPMS/openssh-2.5.2p2-1cl.src.rpm
ftp://atualizacoes.conectiva.com.br/5.0/i386/openssh-clients-2.5.2p2-1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/5.0/i386/openssh-2.5.2p2-1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/5.0/i386/openssh-askpass-2.5.2p2-1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/5.0/i386/openssh-askpass-gnome-2.5.2p2-1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/5.0/i386/openssh-server-2.5.2p2-1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/5.1/SRPMS/openssh-2.5.2p2-1cl.src.rpm
ftp://atualizacoes.conectiva.com.br/5.1/i386/openssh-clients-2.5.2p2-1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/5.1/i386/openssh-2.5.2p2-1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/5.1/i386/openssh-askpass-2.5.2p2-1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/5.1/i386/openssh-askpass-gnome-2.5.2p2-1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/5.1/i386/openssh-server-2.5.2p2-1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/6.0/SRPMS/openssh-2.5.2p2-1cl.src.rpm
ftp://atualizacoes.conectiva.com.br/6.0/RPMS/openssh-clients-2.5.2p2-1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/6.0/RPMS/openssh-2.5.2p2-1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/6.0/RPMS/openssh-askpass-2.5.2p2-1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/6.0/RPMS/openssh-askpass-gnome-2.5.2p2-1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/6.0/RPMS/openssh-server-2.5.2p2-1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/ferramentas/ecommerce/SRPMS/openssh-2.5.2p2-1cl.src.rpm
ftp://atualizacoes.conectiva.com.br/ferramentas/ecommerce/i386/openssh-2.5.2p2-1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/ferramentas/ecommerce/i386/openssh-askpass-2.5.2p2-1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/ferramentas/ecommerce/i386/openssh-askpass-gnome-2.5.2p2-1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/ferramentas/ecommerce/i386/openssh-clients-2.5.2p2-1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/ferramentas/ecommerce/i386/openssh-server-2.5.2p2-1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/ferramentas/graficas/SRPMS/openssh-2.5.2p2-1cl.src.rpm
ftp://atualizacoes.conectiva.com.br/ferramentas/graficas/i386/openssh-2.5.2p2-1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/ferramentas/graficas/i386/openssh-askpass-2.5.2p2-1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/ferramentas/graficas/i386/openssh-askpass-gnome-2.5.2p2-1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/ferramentas/graficas/i386/openssh-clients-2.5.2p2-1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/ferramentas/graficas/i386/openssh-server-2.5.2p2-1cl.i386.rpm
ADDITIONAL INSTRUCTIONS
Users of Conectiva Linux version 6.0 or higher may use apt to perform
upgrades of RPM packages:
- add the following line to /etc/apt/sources.list if it is not there yet
(you may also use linuxconf to do this):
rpm [cncbr] ftp://atualizacoes.conectiva.com.br 6.0/conectiva updates
(replace 6.0 with the correct version number if you are not running CL6.0)
- run: apt-get update
- after that, execute: apt-get upgrade
Detailed instructions reagarding the use of apt and upgrade examples
can be found at http://distro.conectiva.com.br/atualizacoes/#apt?idioma=en
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All packages are signed with Conectiva's GPG key. The key and instructions
on how to import it can be found at
http://distro.conectiva.com.br/seguranca/chave/?idioma=en
Instructions on how to check the signatures of the RPM packages can be
found at http://distro.conectiva.com.br/seguranca/politica/?idioma=en
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All our advisories and generic update instructions can be viewed at
http://distro.conectiva.com.br/atualizacoes/?idioma=en
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subscribe: conectiva-updates-subscribe@papaleguas.conectiva.com.br
unsubscribe: conectiva-updates-unsubscribe@papaleguas.conectiva.com.br
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